Compare phones
| Global Score | |
| 74.6 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11, 10 |
| -- | 2019-12-27 |
| 6.04 x 3.04 x 0.32 inches | 6.24 x 2.90 x 0.31 inches |
| 6.14 ounces | 6.07 ounces |
| 16 777 216 | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1280 x 720 pixels (HD) | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 267 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8.1 |
| Performance | |
| Samsung Exynos 7 Octa 7884 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| ARM Mali-G71 GPU | Mali-G72 MP3 GPU |
| 8.82 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 14.14 |
| Camera | |
| 13.00 MP + 8.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 9.02 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3000mAh Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 4.96 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy A51 is much better than the Samsung Galaxy J7 Duo, getting an 85.5 score against 74.6. The Galaxy A51 design is a little thinner and just a bit lighter than Samsung Galaxy J7 Duo. These phones include Android OS, but the Galaxy A51 has 11 version and Samsung Galaxy J7 Duo has Android 8.0 Oreo.
Galaxy A51 features a better looking display than Samsung Galaxy J7 Duo, because it has a larger display, a lot better screen density and a much better resolution of 1080 x 2400 pixels. The Galaxy A51 counts with just a bit better processing power than Galaxy J7 Duo. Both of them have the same RAM amount and a Octa-Core CPU.
Galaxy A51 has a lot bigger storage for games and applications than Samsung Galaxy J7 Duo, because it has a SD memory card expansion slot that admits a maximum of 512 GB and 128 GB internal memory. Samsung Galaxy A51 features a greater camera than Galaxy J7 Duo, because although it has a tinier aperture which is not so good for shooting pictures and videos in low-light situations, it also counts with a much better (4K) video quality, a way bigger sensor taking much higher quality videos and photographs and a lot more mega pixels camera.
Galaxy A51 features longer battery performance than Samsung Galaxy J7 Duo, because it has a 33 percent larger battery size.
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